TrueType

[[Indices]] : [[Type Technologies]] : TrueType

TrueType is a digital [[type technology]] originaly developed by [[Sampo Kaasila]] of [[Apple|Apple, Ink]], whose remit was to create a custom technology so as to avoid paying royalty fees to use font technologies developed by other parties, as well as to solve some technical limitations of [[Adobe|Adobe's]] [[PostScript]] based [[Type 1]] font format. TrueType differs from Type 1 in that it uses [[quadratic beziers|quadratic]] as opposed to [[cubic beziers|cubic]] [[bezier curves]]. TrueType excels at on-screen rendering due to the fact that it can support sophisticated [[hinting]] instructions. The technology was cross-licensed with a [[Microsoft]] replacement for [[PostScript]] called [[TrueImage]], but today only TrueType survives. A few years later the format was extended to support [[Unicode]] and more complex linguistic and typographic behaviours such as automatic ligature substitution and Indic vowel rearrangement. However the new extensions, called [[AAT]] (Apple Advanced Typography), were not licensed to Microsoft, who then set about creating their own extensions to TrueType (along with [[Adobe]]), which they called [[OpenType]]. The two extensions are incompatible and whilst their feature sets overlap, there are many things that one can do which is impossible with the other.

For other articles on TrueType, see:
* http://www.microsoft.com/typography/WhatIsTrueType.mspx
* http://www.microsoft.com/typography/TrueTypeFonts.mspx
* http://www.microsoft.com/typography/TrueTypeHistory.mspx
* http://developer.apple.com/fonts/TTRefMan/